Evaluación técnico-económica de una propuesta de planta de tratamiento de aguas residuales crómicas
Publicado 2022-12-02
Palabras clave
- Cromo,
- Evaluación económica,
- Simulación de proceso,
- Tratamiento de aguas residuales
Cómo citar
Derechos de autor 2022 Amaury Pérez Sánchez, Marisabel Sánchez González
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Esta obra está bajo una licencia internacional Creative Commons Atribución 4.0.
Resumen
Las plantas de tratamiento de aguas residuales son sistemas que, de funcionar apropiadamente, pueden ayudar a la salud de la industria y el medioambiente. En el presente trabajo se efectuó la evaluación técnico-económica de una propuesta de planta de tratamiento de aguas residuales crómicas con una capacidad de procesamiento de 9 t de aguas residuales por lote, con el fin de determinar sus principales parámetros de rentabilidad, empleando el simulador SuperPro Designer® v. 10. Se generan alrededor de 6959,90 L/lote de agua tratada, mientras que se requiere una inversión total de capital de USD $ 3,549 millones y un capital fijo directo de USD $ 3,222 millones. La partida que más influencia presenta en los costos anuales de operación es la de costos dependientes de la instalación (USD $ 345 000/año) mientras que el reactivo que más influye en los costos anuales por concepto de consumo de materiales es el cloruro férrico (USD $ 56 805/año). Se obtuvo un costo unitario de procesamiento de USD $ 0,22/kg, unas ganancias netas anuales de USD $ 486 000 y un Retorno de la Inversión de 22,16%. Los valores obtenidos de los indicadores Valor Actual Neto (USD $ 3 361 000), Tasa Interna de Retorno (29,61 %) y Periodo de Recuperación de la Inversión (4,51 años) permiten establecer que la propuesta es rentable bajo las condiciones económicas actuales de Cuba.
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